The smallest container within a computer's storage system that is used to store information such as data, settings, and commands used in a computer program.

A file is the smallest container that can be copied, deleted, or moved within a file system.

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File

The way in the content of a file is organized. Often, a file type is indicated by the file extension such as .jpg, .gif, .png., .mp3, .wav, .wma, .mp4, .avi, and .wmv.

File Format

The methods and structures that an operating system uses to organize files on a storage device like a hard drive.

File systems often use directory structures to keep track of files.

​​File System

The use of user and file attributes that control which users can read, write, move, or delete each file.

​​File Permissions

The process of tracking changes to a file so that a file can be repaired or restored in case of file corruption or data loss.

​​Journaling

(New Technology File System) A journaling file system that allows you to choose which users or groups can access files and folders.

NTFS

An operating system interface that allows a user to interact with the computer by displaying text on a screen and accepting input from the keyboard.

• The input is entered as commands.

• The command line is used primarily by IT and other tech professionals.

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​Command Line Interface